The diffusivity was studied at 900 to 1200C, using deep level transient spectroscopy and tracer methods. Particular emphasis was placed upon well-defined boundary conditions. The surface concentrations which were deduced from the tracer method agreed with solubility data, and the concentration of electrically active interstitial Mn was found to represent 60 to 70% of the total Mn content. Both methods yielded identical diffusion coefficients. These could be described by:

D (cm2/s) = 6.9 x 10-4 exp[-0.63(eV)/kT]

D.Gilles, W.Bergholz, W.Schröter: Journal of Applied Physics, 1986, 59[10], 3590-3